Inverting the diastereoselectivity of the mukaiyama-michael addition with graphite-based catalysts
Type
ArticleKAUST Department
Chemical Science ProgramKAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
Date
2014-01-08Online Publication Date
2014-01-08Print Publication Date
2014-02-07Permanent link to this record
http://hdl.handle.net/10754/563388
Metadata
Show full item recordAbstract
Here, we show that graphite-based catalysts, mainly graphite oxide (GO) and exfoliated GO, are effective recyclable catalysts for a relevant stereoselective Mukaiyama-Michael addition, outperforming currently available catalysts. Moreover, the graphite-based catalysts described here invert the diastereoselectivity relative to that observed with known catalysts, with the unprecedented large prevalence of the anti diastereoisomer. This inverted diastereoselectivity is increased when the catalyst concentration is reduced and after catalyst recycling. Density functional theory calculations suggest that the selectivity is determined by two types of supramolecular interactions operating between the catalyst and the substrates at the diastereoselectivity- determining transition state, specifically, the π-stacking of b-nitrostyrene with graphite and the van der Waals interaction between the SiMe3 group of the silyl ether and the graphite. © 2013 American Chemical Society.Citation
Acocella, M. R., Mauro, M., Falivene, L., Cavallo, L., & Guerra, G. (2014). Inverting the Diastereoselectivity of the Mukaiyama–Michael Addition with Graphite-Based Catalysts. ACS Catalysis, 4(2), 492–496. doi:10.1021/cs401053tSponsors
We thank Prof. Arrigo Scettri, Dr. Marialuigia Raimondo, and Prof. Liberata Guadagno for useful discussions. The Ministero dell' Istruzione dell' Universita e della Ricerca is gratefully acknowledged for financial support (PRIN).Publisher
American Chemical Society (ACS)Journal
ACS Catalysisae974a485f413a2113503eed53cd6c53
10.1021/cs401053t